Rotary pump



Feb. 5, 1929. 1,701,103

AG. c. EGY

ROTARY PUMP Filed Feb. 14, 1927 v I v {Ill-IIIH f Patented Febr' 5, 1929.

muren STATES Grenen' c. my, or maas ern, n rss'ounr.

nonni? rum.

`Application iled February 14, 1927. Serial No. 168,112.

This inventidn relates to a rotary pump, one of the objects being to provide a device of this character having an impeller ofnovel construction whereby various substances, such as gas, liquids and semi-fluids can be forced in a continuous stream, means being employed for automatically compensating for wear upon the working parts, maintaining the parts at the proper temperature during the operation of the pump, and keeping the working parts properly lubricated.

With the foregoing and other objects in view which'will appear as the'description proceeds, the invention resides in the combnation and arrangement of parts and in the Ldetails ofl construction hereinafter described and claimed, it being understood that changes y in the precise embodiment of theinvention herein disclosed'may be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawinse, the 'preferred form ofthe invention has en shown.

In said drawings, Figure 1 is a central longitudinal section through the housing of the pump, the impeller being shown in elevation.

Figure 2 is a section through a portion of the structure.. p

Referring to the figures by characters of reference 1 designates a frusto-conical stator provided with a coolincr jacket 2 into which water, air orany ther suitable cooling medium can be directed in the usual or any preferred way. The stator has a removable head 3 at itslarge end and this head has an inlet 4 provided with a check valve 5 whereby flow 'of fluid in one direction is prevented. An outlet 6 is provided at the other or small end of the stator. A shaft 7 is journaled in the two ends of the stator and is mounted for limited s lidin movement. Formed on orsecured to this s aft is a iral blade 8 the margin of which is adaptesdpto fit snugly against the inner surface of the frusto-conical stator, said blade being held aglainst the stator by a spring 9 mounted on the s aft and bearing at one end -against an adjustable sleeve 10 and at its other end against a. collar 11 carried by the so shaft 7 Sleeve 10 is sup rted b one of the heads of the stator. `Sh 7 and lade 8 constitute the impeller of'the pump and in the structure illustrated in Figure l is provided v bore 14 in the shaft 7 A lubricant may be l supplied to this bore in any suitable mannerl and will be fed through the passages 18 to the marginal groove 12 so that the blade '8 will be maintained properly lubricated where it contacts with the inner surfaces of the frusto conical stator. Obviously other means than -those shown and describedcan be utilized for lubricating the cooperating faces of the rotor and the stator.

As before pointed out all portions of the pe-- riphery of the spiral blade S are maintained constantly in contact with the inner surface of the'stator and when lubricant is supplied to the cooperating faces of these parts, a tight fit is insured so that there will be prac tically no leakage between the impellerv and the stator. The substance to be pumped is supplied to the stator through the valved inlet 4 and as the shaft 7 rotates in one direction the spiral blade 8 will force material longitudinally of the stator. As the stator diminishes in diameter toward the outlet 6, the area receiving the material being pumped will be correspondingly reduced so that, in addition to the impelling action set up by the spiral blade 8, there will be a forcing action due to the compression of the material as it approaches the outlet. As the cooperating faces of the impeller and the stator become worn, the spring 9` will force the impeller longitudinally to compensate for the wear. The generation of heat due to friction and compression will not be' detrimental because the cooling jacket 2 will prevent the heat from becoming excesslve.

What'is claimed is:

The combination with a coolin jacket, of a frusto-conical stator, surrounded by the jacket, havin an outlet at one end and a removable hea a valved inlet within the head, a shaft slidabl and rotatably Amounted within the head A an the opposed end of the stator, a spiral blade carried-by the shaft and bearing at its at its other end, there being margin` thegstator, there a Y l groove extending from one end to the other stator, means extending through the head for of the edge of the blade for-.holding a lubrivarying the tension of the spx-'1n ,and means cant, a collar rotatable with the shaft adjaeent within the shaft and blade for distributing a 10 one end, a spring on the shaft for thrusting lubricant to the groove in the bladef 5 against'the collar thereb to transmit a longij In testimony that I claim qthe foregoing as tudinal thrust against t e shaft to maintain my( own,'I have heretol axed my signature. the margin of the blade 'pressed against the y GEORGE C. EGY.V 

